Faculty profile

Ronald Laxer

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ProfessorDepartment of MedicineUniversity of Toronto

Ronald Laxer

Professor

Department of Medicine

Temerty Faculty of Medicine

University of Toronto

Toronto, Ontario, Canada

Supervision signals

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2 publications in the last five years, latest in 2023.

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Publications

279

Citations

Collaborators

Grants

Publications by year

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Research

Read how they describe their research on their University of Toronto profile.

Latest papers

Resource use and disease severity of children hospitalized for COVID-19 versus multisystem inflammatory syndrome in children (MIS-C) in Canada.
Canada communicable disease report = Releve des maladies transmissibles au Canada · 2023
A Chromosomal Duplication Encompassing Interleukin-33 Causes a Novel Hyper IgE Phenotype Characterized by Eosinophilic Esophagitis and Generalized Autoimmunity
Gastroenterology · 2022
Image guided sacroiliac joint corticosteroid injections in children: an 18-year single-center retrospective study.
Pediatric rheumatology online journal · 2020

All 10 publications

Latest funding

RareKids-CAN: Pediatric Rare Disease Clinical Trials and Treatment Network
CIHR · 2023 · Co-investigator
$19,999,843
Undiagnosed systemic inflammatory disease - a Canadian Roadmap for Genomic sequencing
CIHR · 2017 · Co-investigator
$20,000
Towards a Wireless Pain Diary Decision Support System for Youth with Juvenile Idiopathic Arthritis
CIHR · 2010 · Co-investigator
$15,000

All 3 grants and awards

10 publications.

Resource use and disease severity of children hospitalized for COVID-19 versus multisystem inflammatory syndrome in children (MIS-C) in Canada.

Farrar D, Hepburn CM, Drouin O, El Tal T, Morin MP, Berard R, King M, Thibodeau ML, Baerg K, Beaudoin-Bussières G, Beaufils C, Bennett TL, Benseler S, Chan K, Cyr C, Dahdah N, Donner E, Embree J, Farrell C, Finzi A, Forgie S, Giroux R, Kang K, Lang B, Laxer R, McCrindle B, Orkin J, Papenburg J, Pound C, Price V, Proulx-Gauthier JP, Purewal R, Sadarangani M, Salvadori M, Thibeault R, Top K, Viel-Thériault I, Haddad E, Scuccimarri R, Yeung R, Kakkar F, Morris S

Canada communicable disease report = Releve des maladies transmissibles au Canada20231 citationsOpen Access

DOI: 10.14745/ccdr.v49i04a03 PMID: 38356877

A Chromosomal Duplication Encompassing Interleukin-33 Causes a Novel Hyper IgE Phenotype Characterized by Eosinophilic Esophagitis and Generalized Autoimmunity

Ashish Marwaha, Ronald M. Laxer, Minggao Liang, Aleixo M. Muise, Thomas Eiwegger, Elena Pope, Roberto Mendoza‐Londono, Michael I. Weinstein, Dilan Dissanayake, Neil Warner, Dimitiri J. Stavropoulos, Christian R. Marshall, Jessie M. Hulst, Kyoko E. Yuki, Michael D. Wilson, Lisa Hung, Xiaojun Yin, G. Latino, Vy Kim, Iram Fatima S. Siddiqui, Jie Pan

Gastroenterology202218 citations

DOI: 10.1053/j.gastro.2022.04.026 PMID: 35489436

Image guided sacroiliac joint corticosteroid injections in children: an 18-year single-center retrospective study.

Chamlati R, Connolly B, Laxer R, Stimec J, Panwar J, Tse S, Muthusami P, Amaral J, Temple M, Parra DA

Pediatric rheumatology online journal2020

DOI: 10.1186/s12969-020-00435-8 PMID: 32552835

Thiemann disease and familial digital arthropathy - brachydactyly: two sides of the same coin?

Damseh N, Stimec J, O'Brien A, Marshall C, Savarirayan R, Jawad A, Laxer R, Kannu P

Orphanet journal of rare diseases20198 citationsOpen Access

DOI: 10.1186/s13023-019-1138-x PMID: 31248428

Trajectories of pain severity in juvenile idiopathic arthritis

Shiff NJ, Tupper S, Oen K, Guzman J, Lim H, Lee CH, Bryce R, Huber AM, Boire G, Dancey P

Pain201842 citations

DOI: 10.1097/j.pain.0000000000001064

An international delphi survey for the definition of the variables for the development of new classification criteria for periodic fever aphtous stomatitis pharingitis cervical adenitis (PFAPA)

Federica Vanoni, Silvia Federici, Jordi Antón, Karyl S. Barron, Paul A. Brogan, Fabrizio De Benedetti, Fatma Dedeoğlu, Erkan Demirkaya, Véronique Hentgen, Tilmann Kallinich, Ronald M. Laxer, Ricardo A. G. Russo, Nataša Toplak, Yosef Uziel, Alberto Martini, Nicolino Ruperto, Marco Gattorno, Michaël Hofer

Pediatric Rheumatology201831 citationsOpen Access

DOI: 10.1186/s12969-018-0246-9 PMID: 29669569

Development of neoplasms in pediatric patients with rheumatic disease exposed to anti-tumor necrosis factor therapies: a single Centre retrospective study

Alexandra Okihiro, Rachana P Hasija, Lillia Fung, Bonnie Cameron, Brian Michael Feldman, Ronald M. Laxer, Rayfel Schneider, Earl D. Silverman, Lynn R. Spiegel, Rae S. M. Yeung, Shirley M. L. Tse

Pediatric Rheumatology201810 citationsOpen Access

DOI: 10.1186/s12969-018-0233-1 PMID: 29540190

The role of local temperature and other clinical characteristics of localized scleroderma as markers of disease activity.

Garcia-Romero MT, Randhawa HK, Laxer R, Pope E

International journal of dermatology2017

DOI: 10.1111/ijd.13452 PMID: 27943304

Juvenile Psoriatic Arthritis (JPsA): juvenile arthritis with psoriasis?

Butbul Aviel Y, Tyrrell P, Schneider R, Dhillon S, Feldman BM, Laxer R, Saurenmann RK, Spiegel L, Cameron B, Tse SM, Silverman E

Pediatric rheumatology online journal201370 citationsOpen Access

DOI: 10.1186/1546-0096-11-11 PMID: 23497068

Radiographic vertebral morphology: A diagnostic tool in pediatric osteoporosis

Outi Mäkitie, Andrea Schwarz Doria, Flavia Henriques, William G. Cole, Sandrine Compeyrot, Earl D. Silverman, Ronald M. Laxer, Alan Daneman, Etienne B. Sochett

The Journal of Pediatrics200599 citations

DOI: 10.1016/j.jpeds.2004.10.052 PMID: 15756228

RareKids-CAN: Pediatric Rare Disease Clinical Trials and Treatment Network

Co-investigatorCIHR2023Team Grant: Pediatric Rare Disease Clinical Network

Principal investigators: Lacaze-Masmonteil, Thierry; Anagnostou, Evdokia; Baribeau, Danielle A; Batthish, Michelle; Bernard, Geneviève; Bernier, Francois P; Butcher, Nancy J; Campbell, Craig Gordon N; Cross, Andrea; Dyack, Sarah; Gantt, Soren M; Gravel, Christopher; Haddad, Elie; Heath, Anna; Kelly, Lauren; King, Alexandra; Klassen, Terry P; Knisley, Lisa; Lai, Meng-Chuan; Lewis, Tamorah R; Marwaha, Ashish K; McBride, Kim; Mitchell, John J; Moore Hepburn, Charlotte; Mooser, Vincent E; Myers, Kenneth A; Offringa, Martin; Oskoui, Maryam; Portales-Casamar, Elodie; Pot, Sara; Potter, Elizabeth K; Richer, Lawrence P; Round, Jeff; Stewart, Breanne; Subbarao, Padmaja; Thebaud, Bernard; Turvey, Stuart E; Ward, Leanne M; Wong-Rieger, Durhane; Wright, Nicola A; Yeh, Ann E.

Keywords: Child Health; Data Science; Drug Development; Paediatric Clinical Research Units; Paediatric Clinical Trials; Patient And Public Involvement; Patient Registries; Precision Medicine; Rare Diseases; Real-World Evidence

$19,999,843

Undiagnosed systemic inflammatory disease - a Canadian Roadmap for Genomic sequencing

Co-investigatorCIHR2017Planning and Dissemination Grant - Institute Community Support

Principal investigators: Kannu, Peter

Keywords: Genomics; Next Generation Sequencing; Rare Disoders; Rheumatology

$20,000

Towards a Wireless Pain Diary Decision Support System for Youth with Juvenile Idiopathic Arthritis

Co-investigatorCIHR2010Meetings, Planning and Dissemination Grant: Musculoskeletal Health and Arthritis

Principal investigators: Stinson, Jennifer N

Keywords: Computerized Decision Support System; Consensus; Juvenile Idiopathic Arthritis; Musculoskeletal Pain; Youth

$15,000

From public funding decisions: CIHR since 2008, NSERC since 1991 and SSHRC since 1998 with their latest competition results, the Canada Foundation for Innovation, Genome Canada, the Canadian Space Agency, Canada Research Chairs, the Fonds de recherche du Québec, Ontario research funding, Michael Smith Health Research BC, the Canadian Cancer Society, Heart & Stroke and Brain Canada.

Profile data last refreshed on September 29, 2026 from the university directory, publication records and public research funding records.

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Ronald Laxer

Research

Latest papers

Latest funding

Resource use and disease severity of children hospitalized for COVID-19 versus multisystem inflammatory syndrome in children (MIS-C) in Canada.

A Chromosomal Duplication Encompassing Interleukin-33 Causes a Novel Hyper IgE Phenotype Characterized by Eosinophilic Esophagitis and Generalized Autoimmunity

Image guided sacroiliac joint corticosteroid injections in children: an 18-year single-center retrospective study.

Thiemann disease and familial digital arthropathy - brachydactyly: two sides of the same coin?

Trajectories of pain severity in juvenile idiopathic arthritis

An international delphi survey for the definition of the variables for the development of new classification criteria for periodic fever aphtous stomatitis pharingitis cervical adenitis (PFAPA)

Development of neoplasms in pediatric patients with rheumatic disease exposed to anti-tumor necrosis factor therapies: a single Centre retrospective study

The role of local temperature and other clinical characteristics of localized scleroderma as markers of disease activity.

Juvenile Psoriatic Arthritis (JPsA): juvenile arthritis with psoriasis?

Radiographic vertebral morphology: A diagnostic tool in pediatric osteoporosis

RareKids-CAN: Pediatric Rare Disease Clinical Trials and Treatment Network

Undiagnosed systemic inflammatory disease - a Canadian Roadmap for Genomic sequencing

Towards a Wireless Pain Diary Decision Support System for Youth with Juvenile Idiopathic Arthritis

Frequent collaborators

Rayfel Schneider

Lynn Spiegel

Earl Silverman

Rae Yeung

Brian Feldman

Jennifer Stimec

Elie Haddad

Christian Marshall

Elizabeth Donner

Shirley Tse

Brian McCrindle

Elena Pope

Charlotte Moore-Hepburn

Joao Amaral

Krista Baerg

Bairbre Connolly

Alan Daneman

Prakash Muthusami

Stuart Turvey

Catherine Pound

Lori Tucker

Etienne Sochett

Shaun Morris

Gilles Boire

Manish Sadarangani

Adam Huber

Jessie Hulst

Julia Orkin

Jesse Papenburg

Jaime Guzman

Olivier Drouin

Susanne Benseler

David Cabral

Ashish Marwaha